Ordered Sets
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. In silico Risk Assessment Studies of New Psychoactive Substances Derived from Amphetamines and Cathinones
The amount and variety of new psychoactive substances (NPS) are expanding, and there are difficulties in assessing their risks. In this regard, in silico methods are potentially useful to predict NPS properties faster and at a lower cost. In this work a quantitative structure-activity relationship (QSAR) model was used to verify the risk of drugs derived fro
J. Braz. Chem. Soc.. Publicado em: 2020-05
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2. Raio de empacotamento de códigos poset / The packing radius of poset codes
Até o trabalho presente, só era conhecido o raio de empacotamento de um código poset nos casos do poset ser uma cadeia, hierárquico, a união disjunta de cadeias do mesmo tamanho, e para algumas famílias de códigos. Nosso objetivo é abordar o caso geral de um poset qualquer. Para isso, iremos dividir o problema em dois. A primeira parte consiste em en
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2012
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3. Convergent Sequences of Discrete Structures and Testability / SequÃncias Convergentes de Estruturas Discretas e Testabilidade
In this work, we studied the recent theory of convergent graph sequences and its extensions to permutation and partially ordered sets with fix dimension. Weâve conjectured a lemma of weak regularity on intervals that, if this conjecture is true, we can extend this theory to ordered graphs, which are graphs such that there is a total order on its vertices. W
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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4. Séries de Hilbert de algumas álgebras associadas a grafos orientados via cohomologia de conjuntos parcialmente ordenados / Hilbert series of algebras associated to directed graphs using cohomology of partially ordered sets
We begin with a definition of the algebras Qn, who originated the study of algebra associated to directed graphs. Then, we define key concepts such as Hilbert series, graded and filtered algebras. Among the quadratic algebras, we introduce the Koszul algebras. The Hilbert series is a useful tool to study the Koszulity of a quadratic algebra. The homological
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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5. Séries de Hilbert de algumas álgebras associadas a grafos orientados via cohomologia de conjuntos parcialmente ordenados / Hilbert series of algebras associated to directed graphs using cohomology of partially ordered sets
Começamos definindo as álgebras Qn, que originaram o estudo das álgebras associadas a grafos orientados em níveis. Em seguida, definimos conceitos importantes, tais como séries de Hilbert , álgebras graduadas e álgebras filtradas. Entre as álgebras quadráticas, introduzimos as álgebras de Koszul. As séries de Hilbert são instrumentos úteis para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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6. Espaços Poset e o problema da distribuição de pesos / Poset space and the weight distribution problem
In this work, we introduce the concept of poset codes (Brualdi - 1995) and in this context we study the weight distribution problem, presenting the necessary concepts of the partially ordered set and error correcting codes theory. The weight distribution is the cardinality of metric-spheres in finite dimensional vector space over a finite field endowed with
Publicado em: 2009
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7. Control sets on orbits and ordered compactification of semigroups / Conjuntos de controle em orbitas adjuntas e compactificações ordenadas de semigrupos
In this work we study two distinct problems: semigroup actions on adjoint orbits and compacti?cation of semigroups. For the study of the semigroup actions, we consider a semi-simple connected noncompact Lie group G and the adjoint orbit through elements in a maximal abelian subalgebra contained in the complement of a maximal compactly embedded subalgebra of
Publicado em: 2007
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8. Quantifying a certain ''advantage law'': minority game with above the rules agents
In this work the properties of minority games containing agents which try to winning all the time are studied by means of computational simulations. We have considered several ways of introducing above the rules clever players using ''strategies'' which try to outdo the others endowed with statistically equivalent strategies and compared the resulting behavi
Brazilian Journal of Physics. Publicado em: 2003-12
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9. A CHARACTERIZATION OF LEXICOGRAPHICALLY ORDERED ηα-SETS
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10. Coclosure operators and chromatic polynomials.
A theorem about closure operators on partially ordered sets is given, and applications to the counting of colorings of graphs according to partition type are derived.
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11. Ordered catenation of sequence-tagged sites and multiplexed SNP genotyping by sequencing
We describe a method for the efficient genotyping of SNPs, involving sequencing of ordered and catenated sequence-tagged sites (OCS). In OCS, short genomic segments, each containing an SNP, are amplified by PCR using primers that carry specially designed extra nucleotides at their 5′-ends. Amplification products are then combined and converted to a concata
Oxford University Press.
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12. A subcloning strategy for DNA sequence analysis.
We describe here a new strategy of fragment preparation for sequencing procedures using endlabelled DNA fragments as substrates (2,3) which is directly applicable to DNA fragments cloned into the Pst I site of pBR322, or in modified form, to inserts into the BamH I or Sal I site of the same plasmid. Ordered sets of subclones of predetermined overlap are are